Question

Show transcribed image textFigure P6.97 shows the circuit of an amplifier fed with a signal source usig with a source resistance Rsig. The bias circuitry is not shown. Replace the BJT with its hybrid-pi equivalent circuit of Fig. 6.40(a). Find the input resistance R in = v pi / ib , the voltage transmission from source to amplifier input, v pi / vsig, and the voltage gain from base to collector, vo/v pi. Use these to show that the overall voltage gain vo / vsig is given by Figure P6.97